Load Specifications
Load data in caliber .30-40 Krag with .308 | 150gr | Barnes TSX BT bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Hodgdon BL-C2 and Lovex D073.6.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 41,307 psi | 88% | 2539 fps | 99.9% |
| Accurate 2460 | <<locked>> | 86% | 42,018 psi | 89% | 2579 fps | 98.6% |
| Accurate 2495 | <<locked>> | 96% | 41,872 psi | 89% | 2618 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 42,540 psi | 90% | 2628 fps | 98.4% |
| Accurate 4064 | <<locked>> | 98% | 41,510 psi | 88% | 2635 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 41,582 psi | 88% | 2589 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 40,495 psi | 86% | 2546 fps | 96.1% |
| Alliant AR-Comp | <<locked>> | 90% | 40,886 psi | 87% | 2612 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 42,119 psi | 89% | 2635 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 84% | 41,887 psi | 89% | 2559 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 41,945 psi | 89% | 2493 fps | 99.6% |
| Bofors RP3 | <<locked>> | 98% | 41,452 psi | 88% | 2635 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 40,582 psi | 86% | 2503 fps | 96.8% |
| Hodgdon BL-C2 | <<locked>> | 90% | 40,335 psi | 86% | 2605 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 84% | 40,698 psi | 86% | 2572 fps | 99.2% |
| Hodgdon H335 | <<locked>> | 84% | 41,220 psi | 87% | 2585 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 41,655 psi | 88% | 2648 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,909 psi | 70% | 1640 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 41,423 psi | 88% | 2648 fps | 99.8% |
| IMR 4198 | <<locked>> | 82% | 40,799 psi | 87% | 2497 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 40,495 psi | 86% | 2546 fps | 96.1% |
| Lovex D073.5 | <<locked>> | 86% | 41,901 psi | 89% | 2579 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 92% | 40,712 psi | 86% | 2605 fps | 98% |
| Lovex S062 | <<locked>> | 96% | 42,409 psi | 90% | 2602 fps | 96.8% |
| Norma 201 | <<locked>> | 92% | 42,032 psi | 89% | 2582 fps | 96.7% |
| Norma 202 | <<locked>> | 92% | 42,018 psi | 89% | 2602 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,924 psi | 70% | 1677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 40,408 psi | 86% | 2546 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 40,480 psi | 86% | 2664 fps | 97.1% |
| Rottweil R 901 | <<locked>> | 88% | 40,524 psi | 86% | 2539 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 94% | 42,322 psi | 90% | 2579 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 40,712 psi | 86% | 2605 fps | 98% |
| Shooters World Precision | <<locked>> | 96% | 42,409 psi | 90% | 2602 fps | 96.8% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 42,047 psi | 89% | 2592 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 39,972 psi | 85% | 2523 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 42,206 psi | 90% | 2516 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 41,249 psi | 88% | 2513 fps | 99.3% |
| Somchem S321 | <<locked>> | 86% | 40,422 psi | 86% | 2572 fps | 96.5% |
| Somchem S335 | <<locked>> | 90% | 40,988 psi | 87% | 2516 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 42,612 psi | 90% | 2628 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 86% | 42,337 psi | 90% | 2513 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 41,916 psi | 89% | 2523 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 94% | 40,350 psi | 86% | 2575 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 94% | 42,337 psi | 90% | 2582 fps | 99.1% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 41,089 psi | 87% | 2572 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 88% | 40,364 psi | 86% | 2539 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 94% | 40,814 psi | 87% | 2572 fps | 98.4% |
| Winchester 748 | <<locked>> | 90% | 41,568 psi | 88% | 2631 fps | 97.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 32,024 psi | 68% | 2352 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 34,171 psi | 72% | 2421 fps | 96.7% |
| Accurate 2495 | <<locked>> | 80% | 23,960 psi | 51% | 2211 fps | 96.3% |
| Accurate 2520 | <<locked>> | 82% | 31,952 psi | 68% | 2408 fps | 95.5% |
| Accurate 4064 | <<locked>> | 86% | 28,036 psi | 59% | 2336 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 38,870 psi | 82% | 2536 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 37,985 psi | 81% | 2497 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 29,182 psi | 62% | 2365 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 39,465 psi | 84% | 2582 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,854 psi | 78% | 2464 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,233 psi | 83% | 2444 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 38,711 psi | 82% | 2579 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 36,042 psi | 76% | 2411 fps | 95.4% |
| Hodgdon BL-C2 | 41.1 gr | 86% | 35,114 psi | 74% | 2497 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 35,534 psi | 75% | 2467 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 80% | 35,911 psi | 76% | 2480 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 38,856 psi | 82% | 2589 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,294 psi | 52% | 1463 fps | 100% |
| IMR 3031 | 34.7 gr | 80% | 27,963 psi | 59% | 2339 fps | 96.6% |
| IMR 4198 | <<locked>> | 80% | 38,406 psi | 81% | 2454 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 37,985 psi | 81% | 2497 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 80% | 33,881 psi | 72% | 2415 fps | 95.1% |
| Lovex D073.6 | 39.8 gr | 86% | 32,938 psi | 70% | 2444 fps | 95.8% |
| Lovex S062 | <<locked>> | 92% | 37,463 psi | 79% | 2507 fps | 95.4% |
| Norma 201 | <<locked>> | 88% | 36,883 psi | 78% | 2477 fps | 95.1% |
| Norma 202 | <<locked>> | 82% | 30,385 psi | 64% | 2352 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,149 psi | 51% | 1496 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,244 psi | 75% | 2438 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 35,476 psi | 75% | 2543 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 31,734 psi | 67% | 2346 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 90% | 37,420 psi | 79% | 2480 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 32,938 psi | 70% | 2444 fps | 95.8% |
| Shooters World Precision | <<locked>> | 92% | 37,463 psi | 79% | 2507 fps | 95.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 39,421 psi | 84% | 2543 fps | 98.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,652 psi | 80% | 2477 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,835 psi | 65% | 2280 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,397 psi | 56% | 2185 fps | 95% |
| Somchem S321 | <<locked>> | 84% | 37,869 psi | 80% | 2520 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 29,921 psi | 63% | 2277 fps | 96.3% |
| Somchem S355 | <<locked>> | 98% | 39,856 psi | 85% | 2575 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 35,259 psi | 75% | 2382 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 30,719 psi | 65% | 2297 fps | 98.3% |
| Vihtavuori N135 | <<locked>> | 80% | 25,585 psi | 54% | 2241 fps | 96.8% |
| Vihtavuori N140 | <<locked>> | 82% | 28,718 psi | 61% | 2290 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 96% | 35,940 psi | 76% | 2470 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 86% | 37,768 psi | 80% | 2487 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 86% | 31,285 psi | 66% | 2369 fps | 95.7% |
| Winchester 748 | <<locked>> | 84% | 33,982 psi | 72% | 2467 fps | 95% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 48 powders for .30-40 Krag loaded with the .308 | 150gr | Barnes TSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,664 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,664 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S355 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. IMR 3031, Hodgdon BL-C2, Lovex D073.6 rank at the top here: for .30-40 Krag with the .308 | 150gr | Barnes TSX BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.